Results 1 to 20 of 20

Hazardous chemicals in microwaves or CRT monitors?

| Scrap Metal Safety and Hazards
  1. #1
    Scrap man started this thread.
    Scrap man's Avatar
    SMF Badges of Honor

    Member since
    Nov 2010
    Location
    NY
    Posts
    657
    Thanks
    36
    Thanked 172 Times in 93 Posts

    Hazardous chemicals in microwaves or CRT monitors?

    So I scored a CRT monitor and a microwave from trash night yesterday, and I start taking apart the monitor (as my basement is slowly flooding). My father comes down and tells me that the monitor tube has some kind of poison gas in it and that the microwave has some radioactive thing in it. Are either of these true?

    There's nothing more fun and more effective than hitting something repeatedly with a sledgehammer


  2. #2
    SMF Badges of Honor


    Member since
    Apr 2011
    Posts
    51
    Thanks
    16
    Thanked 17 Times in 9 Posts
    Nah man the Microwave emits radiation when ON but the radiation it emits is not from a block of uranium or something it's from an AC signal in the Magnetron. No worries there.
    As far as the CRT I didnt know but I found this http://answers.yahoo.com/question/in...6091652AAvfJWC
    Cadmium dust could be pretty bad I guess, I have kicked up a storm of white dust accidentally before when I broke a CRT open. It seems a respirator will do the trick though.

  3. #3
    rca987's Avatar
    SMF Badges of Honor

    Member since
    Jan 2011
    Location
    Texas
    Posts
    937
    Thanks
    46
    Thanked 381 Times in 221 Posts
    I've been going to a new scrap yard a heck of a lot closer than my previous one, and they say they don't accept microwaves. (Even though they still take them from my trailer). So my guess is like you said there is something they worry about, but obviously nothing too terrible.

  4. #4
    SMF Badges of Honor


    Member since
    Feb 2011
    Posts
    199
    Thanks
    0
    Thanked 91 Times in 48 Posts
    Microwaves can be potentially very hazardous, especially if you break the magnetron. I have put a post from wikipedia and if you scroll down to the hazards section you can read exactly what the dangers are. This is the reason most scrap yards will not take microwaves.

    http://en.wikipedia.org/wiki/Microwave_oven

  5. The Following User Says Thank You to Pcbmine for This Post:


  6. #5
    Scrap man started this thread.
    Scrap man's Avatar
    SMF Badges of Honor

    Member since
    Nov 2010
    Location
    NY
    Posts
    657
    Thanks
    36
    Thanked 172 Times in 93 Posts
    Alright, thanks guys. I just finished the monitor and actually pulled out a lot more stuff than I thought would be in there. I cut the cord off the microwave before calling it quits for the night.

  7. #6
    SMF Badges of Honor


    Member since
    Nov 2010
    Posts
    165
    Thanks
    23
    Thanked 69 Times in 36 Posts
    Sorry for the late comment:

    Quote Originally Posted by Scrap man View Post
    So I scored a CRT monitor and a microwave from trash night yesterday, and I start taking apart the monitor (as my basement is slowly flooding). My father comes down and tells me that the monitor tube has some kind of poison gas in it and that the microwave has some radioactive thing in it. Are either of these true?
    Both statements are 100% false. The CRT is a vacuum tube, so there is actually no gas inside of it whatsoever.

    The microwave has nothing radioactive inside of it at all, but rather generates microwaves from a very large voltage (which is why it needs such a large transformer).

    BOTH OF THEM HAVE CAPACITORS! The capacitors will hold charge for between 2days-2weeks depending on type, and, if anything, that makes them dangerous.

    As for the beryllium oxide in the magnetron, it isn't harmful unless its airborne or ingested (just like lead or mercury). That little pink thing is what they consider dangerous if you breath it in. So — don't smash it with a hammer and breath it in. Other then that they are pretty safe.

    There is no doubt in my mind that just using an angle-grinder or sawzall is just as, if not more dangerous then scrapping a microwave or a CRT; but you won't hear anybody here saying not to use them!

    Good Luck scrapping!

  8. The Following 2 Users say Thank You for This Post by TheMetalizer:


  9. #7
    Scrap man started this thread.
    Scrap man's Avatar
    SMF Badges of Honor

    Member since
    Nov 2010
    Location
    NY
    Posts
    657
    Thanks
    36
    Thanked 172 Times in 93 Posts
    I finished both things and I came up with a few more questions:

    1. What do I do with the capacitor from the microwave? I know it still might have a charge and I read the recent thread about getting rid of the charge, but how do I actually do it? Do I just touch both contacts with some kind of grounded metal object? Can I just let it sit for a few weeks?

    2. After the charge is gone, what do I pull out of the capacitor? Do I put it in with motors and breakage, mixed metal, or is it loaded with copper? How do I get the goodies out?

    3. Is there anything inside the CRT tube that's worth smashing it apart to get? I already got the yoke off so the pressure is gone. It seems pretty heavy even for leaded glass, so I was just curious.

    You guys have been a great help so far and I really appreciate it. Thanks!

  10. #8
    eesakiwi's Avatar
    SMF Badges of Honor



    Member since
    Dec 2010
    Location
    NZ
    Posts
    2,359
    Thanks
    2,389
    Thanked 2,301 Times in 1,124 Posts
    Read some of my posts for dismantling the microwave. All the info's there.
    Theres about 1Kg of Copper in it & some heavy chunks of iron core that add up quicklyish.
    The only tough bit is the magnatron (its mostly Copper, 80 grams copper actually) & picking the welded on stainless steel ends off it.
    The stainless is dangerously sharp when cut & theres that poisonous pink ceramic end thing on it, as above.

    Televisions can be so scrap metalscrap metalscrap metalscrap metal dangerous, well the tube is, & the capacitor.

    The first time I saw a screen explode was scrap metalscrap metalscrap metalscrap metal close to being the last thing I saw..........
    16 foot dia circle of 1 to 3 inch glass shards with a gap in the frag zone the shape of my upper torso.

    I tapped the side of it with a hammer, just a little tap too. BOOM!

    What I do is put something soft like a few layers of carpet & turn the TV screen down onto the carpet.
    Actually no, the first thing I do is put some heavy clothing on & the safety specs with side protection & flipdown plastic visor & earmuffs.
    Done that? Good, now, as before..

    Face down, remove screws & slip back off, remember the ariel & switch & RCA socket wires must be cut.
    Short all of the capactors, ie, find them, use a insulated screwdriver or such insulated tool & connect the two spots of wire/solder under the capactor together.
    You will have 1 of 3 things happen, 1 nothing, 2 small spark, 3 'CracK BANG' as it shorts out. Its pleasing when that happens.

    Now gently pull the circut board off the tube end, make sure nothing (like wires or plastic clips) gets caught up & make sure its level (inline) with the tube as its pulled off. Don't pull it sideways at all.

    Of everything I have done with scrapmetal. THIS IS THE MOST DANGEROUS THING I have ever done.!
    I put a 2 inch gash in my arm, down to the meat, & tied a rag around it & kept on going.

    But when Im doing the CRT tube, I'm scrap metalscrap metalscrap metalscrap metalting myself.

    Theres a small plastic cap, slip that off, put a rag over the end of the tube & using plyers, grab the little melted tube in the centre of the circle of pins & twist it over.
    There should be small 'crack' & you will hear the gas get sucked into the screen, it may take a while, anything from 10 seconds to close to a minute. You will know when its done.
    Don't let anything get close to it when its sucking in air, I'd say it could suck all of the blood out of you if you even gave it a chance.

    'In the wild' when I find a TV in a remote place & I just want to strip it there & then, then sort it out at home.
    I tip it on its face, on something soft, like grass, NOT gravel or stones.
    Then I kick sideways at the approate part of the rear of the screen untill I hear the 'crack', then the gas gets sucked in.
    Then I just keep kicking it in the right places till I can pick all of the parts out.

    I did otice yesterday when I scrapped a found TV that the wire thats stuck to the screen with the suction cup looking thing, gave off a spark at some point when I ripped it all off.
    I think there could be a 'charge' still in the screen somehow. Its rings a bell somehow.

    I have noticed that when I cut car windscreens with my loppers that the glass sparks when I cut it. Pretty.
    I think its like those mentos when you chew them, they make sparks.
    Same as when you pull two strips of sticky tape apart, sparks. Or smack a peizo crystal. Spark.

    The TV tube cannot be recycled, the fronts lead glass & over a inch thick.
    Theres a metal band around it & two thin sheets of iron insde of thee screen too.

  11. #9
    Dumpster-Dee's Avatar
    SMF Badges of Honor



    Member since
    Feb 2011
    Location
    SW Georgia
    Posts
    1,775
    Thanks
    2,286
    Thanked 838 Times in 457 Posts
    Noooooooo !!!!!!!!!!!! It's Ronald Mr Dew.......we aren't supposed to answer !!! lol

  12. #10
    SMF Badges of Honor


    Member since
    May 2011
    Location
    Outer Space
    Posts
    18
    Thanks
    2
    Thanked 0 Times in 0 Posts
    Given the toxicity of the magnetron, what is the proper way to dispose of it?

    In the first part of the Wiki article, it talks about super heating liquids. I have seen the opposite happen, and it was amazing. It was minus 30 degrees out, and I was digging through my trunk. I had a bunch of water bottles in there from earlier that year, and need to move them aside. All of them were swollen and frozen solid except one. It was still in a liquid state. Weird right? I tossed it to the side, and it instantly froze. That was one of the coolest things I've ever seen.

  13. #11
    Hypoman's Avatar
    SMF Badges of Honor



    Member since
    Dec 2010
    Location
    Indiana
    Posts
    1,252
    Thanks
    2,748
    Thanked 1,321 Times in 505 Posts
    Bread roll BOOMbastics!

    Needed:
    3 slices of white bread
    one cup drano
    aluminum foil

    Take the aluminum foil and tear into small manageable pieces. Set aside. Tear the 3 slices of white bread in half. Set a few pieces of the aluminum foil on each half of the sliced bread. Now here comes the fun part, I like to get my kids involved here and see who can do it the fastest. Fold those slices in half then roll them in a ball. You should end up with 6 bread balls.(This serves one, multiply this recipe by however many you wish to serve) Eat the bread balls a chew thoroughly. Drink the cup of drano. There you have it! A quick and easy recipe that is a blast! You don't need to kill yourself to make great food!

  14. #12
    Mick's Avatar
    SMF Badges of Honor



    Member since
    Aug 2010
    Location
    Palermo, Me
    Posts
    3,407
    Thanks
    363
    Thanked 3,077 Times in 1,323 Posts
    Quote Originally Posted by Hypoman View Post
    Bread roll BOOMbastics!

    Needed:
    3 slices of white bread
    one cup drano
    aluminum foil

    Take the aluminum foil and tear into small manageable pieces. Set aside. Tear the 3 slices of white bread in half. Set a few pieces of the aluminum foil on each half of the sliced bread. Now here comes the fun part, I like to get my kids involved here and see who can do it the fastest. Fold those slices in half then roll them in a ball. You should end up with 6 bread balls.(This serves one, multiply this recipe by however many you wish to serve) Eat the bread balls a chew thoroughly. Drink the cup of drano. There you have it! A quick and easy recipe that is a blast! You don't need to kill yourself to make great food!
    Unfortunately, some giant brains are just liable to try this. Should you microwave before eating?
    People may laugh at me, but that's ok. I laugh all the way to the bank.

  15. #13
    Scrap man started this thread.
    Scrap man's Avatar
    SMF Badges of Honor

    Member since
    Nov 2010
    Location
    NY
    Posts
    657
    Thanks
    36
    Thanked 172 Times in 93 Posts
    Quote Originally Posted by Hypoman View Post
    Bread roll BOOMbastics!

    Needed:
    3 slices of white bread
    one cup drano
    aluminum foil

    Take the aluminum foil and tear into small manageable pieces. Set aside. Tear the 3 slices of white bread in half. Set a few pieces of the aluminum foil on each half of the sliced bread. Now here comes the fun part, I like to get my kids involved here and see who can do it the fastest. Fold those slices in half then roll them in a ball. You should end up with 6 bread balls.(This serves one, multiply this recipe by however many you wish to serve) Eat the bread balls a chew thoroughly. Drink the cup of drano. There you have it! A quick and easy recipe that is a blast! You don't need to kill yourself to make great food!
    I like BBQ sauce on mine

  16. #14
    SMF Badges of Honor


    Member since
    Dec 2010
    Location
    Canada
    Posts
    33
    Thanks
    0
    Thanked 6 Times in 3 Posts
    Quote Originally Posted by eesakiwi View Post
    The TV tube cannot be recycled, the fronts lead glass & over a inch thick.
    Theres a metal band around it & two thin sheets of iron insde of thee screen too.
    There's a landfill one town over that accepts tv tubes at no charge, but I only find myself there when I'm passing through with a truck already full of stone and concrete scrap (free dump over 1 ton).

    We have a small scrap yard that actually buys old tv's and monitors but it's only two or three days out of the year and when the trailer is full they shut it down until next time.

    For the amount of time you are investing in scrapping a tv versus the money return and disposal hassles you're better off holding your breath at the curb with a hammer, smashing out what you can really fast cut the cord and move on. Around here city pickup takes care of the rest.

  17. #15
    Hypoman's Avatar
    SMF Badges of Honor



    Member since
    Dec 2010
    Location
    Indiana
    Posts
    1,252
    Thanks
    2,748
    Thanked 1,321 Times in 505 Posts
    And that's the kinda thing that give scrappers a bad name.

  18. The Following 7 Users say Thank You for This Post by Hypoman:


  19. #16
    bcrepurposing's Avatar
    SMF Badges of Honor


    Member since
    Dec 2013
    Location
    Northern Central MN
    Posts
    152
    Thanks
    3
    Thanked 155 Times in 69 Posts

    Hazardous chemicals in microwaves or CRT monitors?

    I second that Hypoman.

    *begin rant*
    I got kids that play in my yard and animals. You do that in my yard and I would probably force feed the remains to you if I caught you. I have had to clean that crap up before from some previous @$$hat that did it in my yard. NOT COOL!!!

    Take the whole thing and dispose of it properly or leave it alone. take some pride in your work!

    The people suggesting smash and grab tactics are what give scrappers a bad name. You are part of the problem; not the solution. Each person that does that crap gives those of us that do things the right way a bad name. If you are gonna teach someone to do something, do it the right way!
    *end rant*
    "Reuse, Repurpose, Recycle..." - BC Repurposing Motto

    www.bcrepurposing.weebly.com
    https://www.facebook.com/bc.repurposing

  20. The Following 6 Users say Thank You for This Post by bcrepurposing:


  21. #17
    SMF Badges of Honor

    Member since
    Jul 2015
    Location
    Palm Coast, FL
    Posts
    55
    Thanks
    94
    Thanked 31 Times in 12 Posts
    Microwaves can be potentially very hazardous, especially if you break the magnetron. I have put a post from wikipedia and if you scroll down to the hazards section you can read exactly what the dangers are. This is the reason most scrap yards will not take microwaves.
    My yard takes microwaves. I mean I want safety for everyone and all, but I find these to be a popular item. I'll pick up 2-3 in a month on my bicycle scrap runs. I gut the microwave of its parts, and use the microwave as a storage box for small metal parts like screws and such. It's a nice, mostly, waterproof container.

  22. #18
    SMF Badges of Honor

    Member since
    Jul 2015
    Location
    Palm Coast, FL
    Posts
    55
    Thanks
    94
    Thanked 31 Times in 12 Posts
    you're better off holding your breath at the curb with a hammer, smashing out what you can really fast cut the cord and move on. Around here city pickup takes care of the rest.
    Wow. Are you aware that what you just described is a felony charge in Florida? You should look that law up in Canada, I am sure it's there. Wow. If you take anything from a CRT TV that means you scrapped it, that can lead to a felony charge. Once you scrap from a CRT TV you have to dispose of the CRT tube legally or else you committed a felony. Not even the owner the the CRT can take something from it. As the EPA and the Law clearly says, only a owner of the CRT TV can leave it at the curb - that's it. At which point, it must only be picked up by the trash to be taken to the dump. It makes no sense at all, but I do not write laws I just obey them.

    Man, I would stop doing that if I was you. I second the other posts, that gives scrappers a deplorable name, and you gotta stop that.


  23. Similar threads on the Scrap Metal Forum

    1. Pennsylvania | For Sale - Crt Monitors
      By ozzy214 in forum Scrappers Classifieds
      Replies: 5
      Last Post: 08-01-2012, 10:15 PM
    2. Now What?? Regarding TV and CRT monitors
      By RVS in forum TV and Monitor Recycling
      Replies: 7
      Last Post: 05-13-2012, 09:16 PM
    3. Some free monitors,printers,microwaves in S.E. Wisconsin
      By johnuppy in forum General - Let's talk business
      Replies: 0
      Last Post: 03-09-2012, 06:33 PM
    4. CRT Monitors
      By tryingtoscrap in forum Dismantling, Breaking Down & Maximizing Scrap
      Replies: 11
      Last Post: 12-01-2011, 12:56 PM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

 
Browse the Most Recent Threads
On SMF In THIS CATEGORY.





OR

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

The Scrap Metal Forum

    The Scrap Metal Forum is the #1 scrap metal recycling community in the world. Here we talk about the scrap metal business, making money, where we connect with other scrappers, scrap yards and more.

SMF on Facebook and Twitter

Twitter Facebook